I remember TV Guide keeping listings for WKBD into the 2000s in both the Northern Michigan and Northern Wisconsin TV Guides (oddly, the Northern Wisconsin edition never had WGKI/WFQX in their guides despite that TV Guide being the TV guide for the UP outside of the eastern three counties and WGKI/WFQX being on cable in most of the UP and into Wisconsin from 1995 until 2003)

I don't remember WKBD in the Northern MI guide in the 90s. But I was in Cheboygan, and you all know the story of Cable in Cheboygan back then...

tvtv.us recently added Canada and the UK to its service.
If you want to be shocked, do a "Broadcast" listing for a small town in the UK, then a small town in USA, then a small town in Canada!

I didn't know about tvtv.us before your mention, so I checked it out.
The OTA list for Detroit is pretty bad. It is way way out of date in its listings of the many subs that have been added by local stations or services that have shifted to different channel designations. The Detroit OTA list is also cluttered with all the the Toledo stations in the mix, as well as Ontario ones well outside the range for normal reception by a Detroit area viewer.
After seeing this, I didn’t bother to see how accurate (or not) my Comcast listings might be.
A pass on tvtv for me.